Report Highlights

How This Market Works

The manganese value chain begins with open-pit or underground mining of manganese ore (20%–50% MnO₂ grade), followed by crushing and beneficiation (upgrading to 35%–48% Mn concentrate), then smelting for metallurgical applications (producing ferromanganese or silicomanganese alloy for steel) or hydrometallurgical processing for battery applications. The battery-grade pathway requires dissolution of manganese ore in sulfuric acid, solvent extraction to remove iron and other impurities, precipitation and crystallisation to produce manganese sulphate monohydrate, and multiple purification stages to achieve the 99.5%+ Mn purity and sub-1 ppm impurity specifications required for NMC and LMFP cathode precursor synthesis. The HPMSM production process is technically similar to the nickel and cobalt sulphate production used in NMC cathode precursor manufacturing — requiring chemical plant capital of USD 100–300 million per 50,000 tonne/yr HPMSM facility and process chemistry expertise that China's battery materials industry has spent a decade developing.

Who Controls This Market — And Who Is Threatening That Control

South32 is the world's largest manganese mining company by reserve base and production capacity, operating the South Africa Manganese operation (Hotazel, Northern Cape, South Africa) and GEMCO (Groote Eylandt Mining Company, Northern Territory, Australia) — two of the highest-grade and lowest-cost manganese ore deposits globally. South32's competitive position is resource quality: Hotazel ore averages 38%–48% Mn grade with low impurities, making it the preferred feedstock for battery-grade HPMSM production where impurity control starts at ore selection. South32 has announced a high-purity manganese sulphate monohydrate development study targeting 50,000 tonne/yr HPMSM production co-located with Hotazel, with Australian and South African government co-investment support — positioning South32 to capture the battery material value-add rather than exporting raw ore to Chinese processors.

Assmang (a joint venture between African Rainbow Minerals and Assore) operates the Nchwaning and Gloria mines in South Africa's Kalahari Manganese Field — the world's single largest manganese ore body, hosting approximately 80% of global manganese reserves. Assmang produces approximately 3.5–4.0 million tonnes of manganese ore annually from the Kalahari, making it one of the world's largest single-source manganese suppliers. Like South32, Assmang exports primarily as ore and sinter, with the HPMSM value-add captured by Chinese downstream processors. The competitive dynamic in manganese mining is therefore one of ore producers (South Africa-dominant) and processors (China-dominant) — with the strategic opportunity being integration of non-Chinese ore production with non-Chinese HPMSM processing capacity.

Eramet operates the Comilog manganese mine in Gabon (the world's highest-grade manganese ore deposit at 45%–52% Mn) and has established the most commercially advanced non-Chinese HPMSM pathway through its Sandouville nickel refinery repurposing for battery-grade manganese and nickel chemical production. Eramet's competitive advantage is its European processing infrastructure and existing chemical plant engineering expertise — its Dunkirk, France facility is being modified to produce HPMSM from Comilog ore, targeting 30,000 tonne/yr production by 2026. The Eramet HPMSM project — if successful — would be the first significant non-Chinese battery-grade HPMSM production in Europe, qualifying for EU Critical Raw Materials Act strategic project designation.

Industry Snapshot

The Manganese Supply Chain market was valued at approximately USD 8.6 billion in 2024 and is projected to reach approximately USD 18.4 billion by 2034, growing at a CAGR of 7.9%–9.6% over the forecast period. Steel production accounts for approximately 85%–90% of total manganese demand by volume (ferromanganese and silicomanganese alloy additives used in all steel grades), but the battery-grade HPMSM segment — representing approximately 3%–5% of total manganese demand by volume in 2024 — is the fastest-growing and highest-value segment, with HPMSM pricing of USD 3,000–5,000/tonne versus USD 300–500/tonne for standard manganese sulphate. Battery-grade demand is projected to grow from approximately 100,000 tonnes HPMSM equivalent in 2024 to 1.5–2.0 million tonnes by 2034 as LMFP cathode adoption scales.

The LMFP cathode adoption is the most consequential structural change in manganese demand. CATL's Shenxing battery using LMFP chemistry — launched commercially in 2024 with 4C fast-charging capability — demonstrated that manganese-based cathode chemistry can achieve performance competitive with mid-tier NMC while maintaining LFP's cost and safety advantages. If LMFP captures 20%–30% of the LFP market (currently 45%–50% of global EV battery chemistry) by 2030, the HPMSM demand increase would represent 500,000–800,000 additional tonnes per year — requiring a 5–8x expansion of current global HPMSM production capacity within 6 years.

The Forces Accelerating Demand Right Now

LMFP cathode adoption by major EV manufacturers is the primary near-term demand driver. CATL's commercial LMFP cell launch in 2024, BYD's LMFP development programme, and GM's Lithium Manganese Iron Phosphate battery roadmap for its Ultium platform collectively create a structured HPMSM demand signal from the world's three largest battery markets. LMFP chemistry's advantage over LFP — approximately 20%–30% higher energy density enabling 600–700 km range on a single charge versus 500–550 km for comparable LFP packs — while maintaining LFP's cost (approximately USD 60–80/kWh versus USD 100–120/kWh for NMC) creates a commercial incentive for LMFP adoption that does not require subsidies to justify the cathode chemistry premium over LFP.

Steel demand growth — particularly in construction, infrastructure, and automotive applications in developing economies — sustains the baseline ferromanganese and silicomanganese demand that accounts for 85%–90% of total manganese volume. India's construction boom (targeting 100 smart cities, 35 million affordable housing units by 2030), Southeast Asian infrastructure investment, and post-COVID industrial recovery in Latin America create steel demand growth of 3%–5% annually in developing markets that more than offsets flat-to-declining steel demand in mature European and US markets. Indian manganese ore imports from South Africa and Gabon are growing at 8%–10% annually — positioning India as the second-largest manganese ore consumer after China by 2028.

What Is Holding This Market Back

HPMSM production scale-up outside China faces the same process know-how barrier as rare earth processing and graphite purification — it is a chemical engineering process that Chinese producers have optimised over 10–15 years and that new entrants cannot short-cut without technology licensing from Chinese counterparts (which is not commercially available) or 4–6 years of independent process development. Element 25's Butcherbird HPMSM project in Western Australia, Euro Manganese's Chvaletice project in Czech Republic, and Eramet's Dunkirk facility are the most advanced non-Chinese HPMSM projects — all targeting 2026–2028 commercial production but facing process chemistry development timelines that have already slipped 12–18 months from original projections. Impact severity: high; trajectory: improving as process development investment scales.

South African logistics constraints limit the reliable scaling of Kalahari manganese ore export. Transnet's Manganese Rail Line connecting Hotazel to Saldanha Bay (900 km) has a rated capacity of 16 million tonnes per year but has been operating at 9–11 million tonnes due to locomotive shortages, rail infrastructure maintenance backlogs, and cable theft on the line — a logistics bottleneck reducing South African manganese export capacity by 30%–40% below mine capability. The Saldanha Bay port terminal has dedicated manganese storage and ship-loading equipment but is constrained by rail feed rate. Transnet's privatisation process (concession of rail operations to private operators) is expected to improve operational performance by 2026–2028 — the resolution of this logistics bottleneck is the single most important factor determining whether South African manganese ore can reliably supply non-Chinese HPMSM refinery demand growth.

The Investment Case: Bull, Bear, and What Decides It

The bull case is LMFP battery chemistry achieving 35%–40% global EV cathode market share by 2030 — driven by CATL Shenxing commercial success, GM Ultium LMFP programme launch, and BYD LMFP cell production at scale — creating HPMSM demand of 800,000–1,000,000 tonnes by 2028 against current global supply of approximately 120,000 tonnes. This demand-supply imbalance drives HPMSM prices from USD 3,000–4,000/tonne to USD 6,000–8,000/tonne, creating investment returns for non-Chinese HPMSM project developers that justify accelerated capital commitment. Under this scenario, the market reaches USD 18.4 billion by 2034 as both battery and steel demand grow. Required conditions: CATL Shenxing achieving 5+ million unit production by 2026, at least three non-Chinese HPMSM facilities reaching commercial production by 2027, and South African rail logistics improving to 14+ million tonnes/yr by 2026. Bull case probability: 35%–40%.

The bear case is LMFP adoption stalling — technical challenges with LMFP's lower voltage plateau (reducing effective energy density advantage versus NMC in real-world conditions) causing EV manufacturers to revert to LFP/NMC split rather than adopting LMFP at scale, and non-Chinese HPMSM projects continuing to face process development delays. In this scenario, battery-grade manganese demand grows at 15%–20% annually rather than 40%–50%, and the market reaches only USD 12–14 billion by 2034. The leading indicator is CATL Shenxing production volume reported in H2 2025 — above 500,000 cells per month would confirm commercial LMFP adoption trajectory.

Where the Next USD Billion Is Being Built

The 3–5 year opportunity is first-mover HPMSM production outside China in Western-aligned jurisdictions qualifying for IRA battery material tax credits. Any HPMSM facility in a US FTA country (Australia, Canada, UK, EU member states) producing battery-grade manganese sulphate qualifies as a critical mineral source under IRA Section 30D — enabling EV manufacturers to use this HPMSM in their US-manufactured cells without losing the USD 3,750 critical minerals portion of the USD 7,500 EV tax credit. The premium US and European battery manufacturers will pay for IRA-qualifying HPMSM is estimated at USD 500–1,500/tonne above Chinese-equivalent pricing — sufficient to improve project IRR by 4–8 percentage points and make non-Chinese HPMSM economics compelling without additional government support.

The 5–10 year opportunity is deep-sea manganese nodule processing. The Pacific Ocean floor hosts polymetallic nodules containing 25%–30% manganese, 1%–2% nickel, 1%–1.5% copper, and 0.2%–0.3% cobalt — a metal-rich resource whose total estimated manganese content exceeds 350 years of current global mine production. The International Seabed Authority has issued 31 exploration contracts and is developing a Mining Code for commercial operations. The Metals Company (Nasdaq: TMC), DEME Group, and Allseas are developing nodule harvesting and processing systems. If deep-sea nodule mining reaches commercial scale in the 2030s — with US IRA-qualifying jurisdictional frameworks for UNCLOS Area nodule processing — it could provide manganese, nickel, cobalt, and copper from a source with no land displacement, lower waste generation, and no country-specific geopolitical dependency.

Market at a Glance

Regional Intelligence

South Africa hosts the world's most significant manganese ore reserves in the Kalahari Manganese Field in the Northern Cape province — estimated at 4 billion tonnes of ore containing approximately 30%–40% Mn, representing 70%–80% of global economically recoverable manganese reserves. The Kalahari deposits are open-pittable, high-grade, and low-impurity — ideal feedstock for battery-grade HPMSM production. South African manganese is exported through the Saldanha Bay ore terminal after 900 km rail transit on the Transnet Manganese Rail Line, a logistics chain whose reliability has been the primary constraint on South African manganese export growth since 2020. Transnet's concession process for the rail line to private operators is expected to complete in 2025–2026, with private operation improving rail utilisation from current 60%–70% of design capacity toward 85%–90%.

China produces approximately 40%–50% of global manganese ore from lower-grade domestic deposits (15%–25% Mn, primarily in Guangxi and Guizhou provinces), processes 90%+ of global HPMSM (battery-grade), and produces approximately 65%–70% of global electrolytic manganese metal and manganese dioxide. China's dominance of battery-grade manganese processing reflects the same pattern as rare earth and graphite — upstream ore diversified (South Africa, Gabon, Australia export to China), downstream processing monopolised by Chinese chemical industry. Australia's manganese sector — South32's GEMCO operation and new HPMSM development projects including Element 25's Butcherbird — is the most active non-Chinese battery-grade manganese value chain development, with Australian government critical minerals support through NAIF (Northern Australia Infrastructure Facility) and Australian Renewable Energy Agency funding for battery material processing.

Leading Market Participants

• South32 (South Africa/Australia)
• Assmang (South Africa)
• Eramet (France/Gabon)
• Manganese X Energy (Canada)
• Element 25 (Australia)
• MP Materials
• Lynas Rare Earths
• Energy Fuels
• Vital Metals
• Arafura Resources

Long-Term Market Perspective

By 2034, the manganese supply chain will have bifurcated into a mature steel industry manganese market (ferromanganese, silicomanganese — modest growth, China/South Africa dominated) and a rapidly growing battery-grade HPMSM market (LMFP cathode driven — 10–20x current volume, partially diversified from Chinese production). The innovation trajectory is toward direct leaching of manganese ore to HPMSM without intermediate smelting — bypassing the energy-intensive pyrometallurgical smelter stage and enabling lower capital cost hydrometallurgical-only processing. Companies including Element 25 and Euro Manganese are developing atmospheric leach HPMSM processes that could reduce facility capital cost by 30%–40% versus conventional routes, potentially democratising HPMSM production beyond the current capital-intensive processing paradigm.

The underweighted development in manganese market analysis is the role of manganese in solid-state battery cathode chemistry. Solid-state batteries — using solid electrolytes rather than liquid — enable high-voltage cathode operation above 4.2V (versus 4.2V limit for liquid electrolyte cells) that disproportionately benefits manganese-rich cathodes: spinel lithium manganese oxide (LiMn₂O₄) and LMNO (lithium manganese nickel oxide) can operate at 4.5–5.0V in solid electrolyte configurations, achieving energy densities of 400–500 Wh/kg that exceed current NMC capabilities. If solid-state batteries adopt high-voltage manganese-rich cathodes — a plausible chemistry direction given Toyota's solid-state battery programme's use of oxide-based cathodes — manganese demand from solid-state battery applications could add a fourth major demand vector (alongside steel, conventional Li-ion, and LMFP) that mainstream manganese market analysis does not yet model.